Spray nozzle



Aug. 27, 192 J. 5 McNA MARA SPRAY NOZZLE Filed Jan. 12, 1927 R'm v. m MW Patented Aug. 27, 1929.

UNITED STATES I 1,725,993 PATENT OFFICE.

JOHN s. MONAMARA, or rA'rEnsON, N W JERSEY, ASSIGNOB TO VAN VLAANDERENMACHINE COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION or NEW JER- SEY.

SPRAY NOZZLE.

- Application filed January 12 1927. Serial No. 160,542.

This invention relates to apparatus for treating fabrics in the ropeformwith liquids, as phosphating liquids and water for washing, and inparticular to that type of nozzles for supplying the liquid to thefabric in which the fabric extends and is drawn through a passage in thenozzle and the liquid is delivered to the fabric radially from variouspoints around the fabric, as in an endless surrounding spray or stream.In any form of nozzle of this class heretofore known or used the sprayor stream delivery outlet was the outlet of a chamber surrounding thepassage and to which the liquid-conducting pipe directly led. Inconsequence, the spray or stream, instead of having a force which wasdesirably uniform all around, was appreciably weaker at the pointdiametrically opposite the connection of the liquid-conducting pipe withsaid chamber than at the point of such connec tion, so that the fabricwas 'notuniform1y impregnated and was also impelled against the side ofthe passage, undergoing harmful F rubbing as it was drawn through thepassage.

The present invention conslsts in part 111 supplementing the mentioned,or what I term the spray, chamber with a chamber whose function it shallbe to distribute the liquid at as nearly as possible uniform pres sureall around to the first chamber,whereby to overcome the mentioned fault.In the best form of the invention the outlet from the spray chamber iscontinuous '01 practically so, existing as a slit, and it delivers themain spray or stream to the fabric, more or less deluging the same, andthe distributing chamber has all around a series of needle-spray outletswhich deliver numerous smaller sprays with superior force calculated tobreak down any matting together of the fibres of the fabric and soinsure a thorough wetting of the wholeof the fabric mass.

In the drawing, I

Fig. 1 is a View in plan of the improved nozzle, partly broken away; and

Fig. 2 is a central vertical sectional view of the nozzle.

The nozzle as herein shown by way of example comprises two main or upperand lower parts, together forming the mentioned passage and togetherforming the spraychamber and the lower one forming the dis tributingchamber.

The upper part, apertured vertically, has

a flaring top or mouth portion 1, anda substantially cylindrical lowerportion 2 whose diameter is somewhat greater than the least (or basal)diameter of the flaring mouth portion, being joined thereto by itsannular top wall 2*; the base of the portion 2 is formed with anexternal flange 3.

-The lower part, also apertured vertically, has a cylindrical chamber 4.extending around its aperture and from the base of said part upward adistance somewhat more than one-half the heightthereof, leaving anupstanding lip or flange 5 projecting upwardly from it. Near the top ofthe chamber 4 and opening outwardly therefrom at equidistant pointsaround the same are (in the present example) eight uniformly gaged portsor outlets 6. This lower part has an external. circumferential flange 7and said flange has in its upper side a rabbet 8. The rabbet has aradial depth such that the base of the portion 2 of the. upper part ofthe device will fit snugly over the thusrabbeted flange in the mannershown in Fig. 2 and that when the parts are thus assembled acircumferential space will exist to form the mainchamber 9; theelevation of the flange and the vertical depth of the rabbet are suchthat when the upper part is fittedto the lower part of the device in themanner shown, with a rubber or other yielding gasket 10 interposedbetween the flange 3 and the bottom of the rabbet and bolts 11 made tosecure the parts together and to cause the gasket to seal the jointbetween them, a circumferential space Or slit 12 will exist between thetop of flange 5 and the overlying wall 2* of cylindrical portion 2,forming the outlet from chamber 9. Preferably in more than one plane, asone near the top and the other near the bottom of the chamber 4,-saidchamber has a circumferential and uniformly spaced series of smallor needle-spray outlets 13.

The liquid conducting pipe 14., delivering into chamber 4, is adapted tobe connected In previous devices of this class the liquid flow from thesource of supply took place directly into a chamber, as 9, surroundingthe fabric passage and having a circumferential outlet, such as 12 tosaid passage, and as already indicated the consequence of thisconstruction was that the liquid was delivered through the slit withappreciably weaker force at the side opposite the connection with thesource of supply than at the side of such supply. In my presentconstruction the space 4 forms a liquid distributing head or chamberrelatively between the source of supply and the chamber ,9 having thecircumferential outlet 12 and since it has means 6 permitting liquidflow from the distributing head to said chamber at various pointsequidistantly spaced from each other and maintaining such flow at saidvarious points at a substantially uniform rate the delivery from chamber9 through slit 12 is appreciably more. uniform all around thanheretofore.

The liquid from the slit 12 acts to deluge the goods, but I find that inorder that the goods may be thoroughly wetted all through it isdesirable to provide means to break up any matting together of thefibres; wherefore the supply outlets 13 are used, thus delivering theliquid in more or less violent jets which have the effect of agitatingand loosening the fibres so that the wetting of the fabric by the liquidbecomes complete.

In reassembling the parts after separating them, as for cleaning, it isdesirable that there should he means for gaging the extent to which oneis slipped over the other and hence the width of the slit 12. Hence oneof the flanges 3 and 7 has set-screws 15 tapped into it in alternationwith the bolts 11 and adapted to bear against the other of such flanges.

Having thus fully described my invention what I claim and desire tosecure by Letters Patent is: e a

1. A nozzle of the class described having an upright passagetherethrough through which the fabric to be treated is to pass, anannular liquid chamber extending around and having means to dischargeliquid therefrom into the passage at substantially all points around thesame,- and a liquid distributing head also arranged around said passageand having means to discharge liquid flow from the head to said chamberat various points equidistantly spaced from each other around thepassage and at said various points at substantially uniform rate.

2. A nozzle of the class described having an upright passagetherethrough through which the fabric to be treated is to pass, anannular liquid chamber extending around and having means to dischargeliquid therefrom into the passage, and a liquid distributing head alsoarranged around said passage and having means to discharge liquid flowfrom the head into said chamber and also directly into the passage.

3. A nozzle of the class described having an upright passagetherethrough through which the fabric to be treated'is to pass and anoutlet for flow of liquid to said passage and jet outlets for flow ofliquid to said passage each less in size than the size of the firstoutlet and directed toward the path of travel of the goods and at anelevation below the first-named outlet.

4. A nozzle of the class described having an upright passagetherethrough through which the fabric to be treated is to pass, annularliquid chambers extending around said passage and having restrictedcommunication with each other, each chamber having means to dischargeliquid into said passage.

5. A passagednozzle of the class described including two apertured partsarranged one within and movable with respect to the other and so thatthe apertures thereof together form the passage of the nozzle, therebeing a liquid space around the passage and between said parts and aliquid chamber around the passageand in one of said parts, said spaceand chamber communicating with each other and one having means todischarge liquid into the passage.

6. A nozzle of the class described having an upright passagetherethrough through which the fabric to be treated is to pass andanoutlet for flow of liquid to such passage and jet'outlets for flow ofliquid to said passage each less in size than the size of the firstoutlet and directed toward the path of travel of the goods and at anelevation different from that of the first-named outlet.

7. A nozzle of the class described having an upright passagetherethrough through which the fabric to be treated is to pass, annularliquid chambersextending around said passage and having restrictedcommunication with each other and one such chamber having a liquidsupply inlet and the other having means to discharge liquid into saidpassage.

In testimony whereof I afiix my signature.

JOHN S. MGNAMARA.

